Protesters angry about rising taxes and the high cost of living clashed with French riot police, who closed off some of the city’s most popular tourist areas and fired tear gas and water cannon as they tried to quell the mayhem in the streets.

French President Emmanuel Macron denounced the violence from the G-20 summit in Argentina, saying those who attacked police and vandalized the Arc de Triomphe will be “held responsible for their acts.” He said he will hold an emergency government meeting Sunday on the protests.

“(Violence) has nothing to do with the peaceful expression of a legitimate anger” and “no cause justifies” attacks on police or pillaging stores and burning buildings, Macron said in Buenos Aires. He refused to answer any questions from journalists about the situation in Paris.

It was the third straight weekend of clashes in Paris with activists dressed in the fluorescent yellow vests of a new protest movement and the worst urban violence since at least 2005. The scene contrasted sharply with other protests in France, where demonstrations and road blockades elsewhere on Saturday were largely peaceful.

Thousands of French police were deployed to try to contain the violence, which began Saturday morning near the Arc de Triomphe and continued well after dark. Paris police said at least 110 people, including 20 police officers, were injured in the violent protests and 224 others were arrested.